I have printed the pendant and the earrings in resin so that all the detail is preserved.Then I just coated it with a chrome spray.
You can print t...he necklace on an fdm printer to lose a bit of detail but it will look reasonably fine.
At first I put a metal chain on the necklace, but I have changed it for a double strap of rope, you can also use a leather strap.
I think it looks better and is cheaper.
I have also made a small medallion to decorate.
To print the box you need the MMU or dual extrusion.
Preconfigured for Prusaslicer